Platinum-macrocycle co-catalyst for electro-oxidation of formic acid

被引：44

作者：

Zhou, Xiaochun ^{[1
]}

Xing, Wei ^{[1
]}

Liu, Changpeng ^{[1
]}

Lu, Tianhong ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 07期

关键词：

formic acid; tetrasulfophthalocyanine (FeTSPc); platinum electrode; fuel cell; electro-oxidation;

D O I：

10.1016/j.elecom.2007.01.045

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work, a new promoter, tetrasulfophthalocyanine (FeTSPc), one kind of environmental friendly material, was found to be very effective in both inhibiting self-poisoning and improving the intrinsic catalysis activity, consequently enhancing the electro-oxidation current during the electro-oxidation of formic acid. The cyclic voltammograms test showed that the formic acid oxidation peak current density has been increased about 10 times compared with that of the Pt electrode without FeTSPc. The electrochemical double potential step chronoamperometry measurements revealed that the apparent activity energy decreases from 20.64 kJ mol(-1) to 17.38 kJ mol(-1) after Pt electrode promoted by FeTSPc. The promoting effect of FeTSPc may be owed to the specific structure and abundant electrons of FeTSPc resulting in both the steric hindrance of the formation of poisoning species (CO) and intrinsic kinetic enhancement. In the single cell test, the performance of DFAFC increased from 80 mW cm(-2) mg(-1) (Pt) to 130 mW cm(-2) mg(-1) after the anode electrode adsorbed FeTSPc. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1469 / 1473

页数：5

共 21 条

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